Sharing Spreadsheets

I have been trying to share a spreadsheet with a group I am a member of. However, each time I invite them and click share it looks like it will be going through. Then the message about who the document is shared with appears and tells me that no users or groups have been invited. How can I get past this? I have tried several times, but have been unsuccessful in getting it to work. I have gotten it to work in the past, but for some reason it doesn't work right now. Please advise.
jweihrauch